SECTION 2 - GENERAL
2-2
– JLG Lift –
3121623
2.2
SERVICE AND GUIDELINES
General
The following information is provided to assist you in
the use and application of servicing and maintenance
procedures contained in this book.
Safety and Workmanship
Your safety, and that of others, is the first consideration
when engaging in the maintenance of equipment.
Always be conscious of weight. Never attempt to move
heavy parts without the aid of a mechanical device. Do
not allow heavy objects to rest in an unstable position.
When raising a portion of the equipment, ensure that
adequate support is provided.
Cleanliness
1.
The most important single item in preserving the
long service life of a machine is to keep dirt and
foreign materials out of the vital components. Pre-
cautions have been taken to safeguard against
this. Shields, covers, seals, and filters are provided
to keep air, fuel, and oil supplies clean; however,
these items must be maintained on a scheduled
basis in order to function properly.
2. At any time when air, fuel, or oil lines are discon-
nected, clear adjacent areas as well as the openings
and fittings themselves. As soon as a line or compo-
nent is disconnected, cap or cover all openings to
prevent entry of foreign matter.
3. Clean and inspect all parts during servicing or
maintenance, and assure that all passages and
openings are unobstructed. Cover all parts to keep
them clean. Be sure all parts are clean before they
are installed. New parts should remain in their con-
tainers until they are ready to be used.
Components Removal and Installation
1. Use adjustable lifting devices, whenever possible, if
mechanical assistance is required. All slings (chains,
cables, etc.) should be parallel to each other and as
near perpendicular as possible to top of part being
lifted.
2. Should it be necessary to remove a component on
an angle, keep in mind that the capacity of an eye-
bolt or similar bracket lessens, as the angle
between the supporting structure and the compo-
nent becomes less than 90 degrees.
3. If a part resists removal, check to see whether all
nuts, bolts, cables, brackets, wiring, etc., have been
removed and that no adjacent parts are interfering.
Component Disassembly and Reassembly
When disassembling or reassembling a component,
complete the procedural steps in sequence. Do not par-
tially disassemble or assemble one part, then start on
another. Always recheck your work to assure that noth-
ing has been overlooked. Do not make any adjustments,
other than those recommended, without obtaining
proper approval.
Pressure-Fit Parts
When assembling pressure-fit parts, use an anti-seize or
molybdenum disulfide base compound to lubricate the
mating surface.
Table 2-1. Inspection and Maintenance
TYPE
FREQUENCY
PRIMARY
RESPONSIBILITY
SERVICE
QUALIFICATION
REFERENCE
Pre-Start
Inspection
Prior to use each day; or
At each Operator change.
User or Operator
User or Operator
Operator and Safety Manual
Pre-Delivery Inspec-
tion
Prior to each sale, lease, or
rental delivery.
Owner, Dealer, or User
Qualified JLG
Mechanic
Service and Maintenance Man-
ual and applicable JLG inspec-
tion form.
Frequent
Inspection
In service for 3 months or 150 hours, whichever
comes first; or
Out of service for a period of more than 3
months; or
Purchased used.
Owner, Dealer, or User
Qualified JLG
Mechanic
Service and Maintenance Man-
ual and applicable JLG inspec-
tion form.
Annual Machine
Inspection
Annually, no later than 13 months from the
date of the prior inspection.
Owner, Dealer, or User
Factory-Certified Ser-
vice Technician
Service and Maintenance Man-
ual and applicable JLG inspec-
tion form.
Preventative
Maintenance
At intervals as specified in the Service and
Maintenance Manual.
Owner, Dealer, or User
Qualified JLG
Mechanic
Service and Maintenance Man-
ual
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